I do not believe we will pursue such request. We do receive many requests that certain extension functionalities (As you mention this for RS-Finder) should be implemented in "core". We do not believe that these functionalities are warranted to be included since they can be included easy as per extension. So no need for core (which we like to keep as clean and lean as possible) inclusion since it exists already as an extension

I understand that the core should be clean as possible. But I think the functionality of a smart search within content-titles like the RS-Finder would be a big improvement in the usability of the backend.

And please consider my second suggestion that isn't implemented in RS-Finder, yet: the use of a smart search in the backend to find config options. I love this feature in my WoltLab web applications because this makes the administration of our forum and calendar much faster and easier. Why not in Joomla?

In my opinion this could be a reason to choose Joomla as CMS for a website if this is available out of the box, not as a extension, which is more or less unknown.